| 摘要 |
PROBLEM TO BE SOLVED: To form a piston pump with an electrically driven motor by operating and rotating a rotary nut, moving a feed screw in an axial direction, and moving a reciprocating piston in reciprocation. SOLUTION: In a piston pump, a ball nut is rotated by a servo motor 9, a worm, and a worm wheel, a ball screw 7 is moved in an axial direction, and a reciprocating piston 2 is formed to move in reciprocation. The servo motor 9 is sequence-controlled or program-controlled by a control device 13, the reciprocating piston 2 is moved in reciprocation, a raw material meat is sucked and delivered, and supplied. In this time, since the piston is electrically driven, oil is leaked in an accident such as the case of a hydraulic cylinder so as to prevent oil from invading into a pump cylinder 1R, and a problem on sanitary is eliminated. The whole is formed in a compact size, a problem of maintenance is eliminated, waste oil is not generated, and thereby, a problem of an environment is eliminated. |
